Write a user flow document for the review and rating process in a newsletter platform. Use a {{tone}} tone for {{target_audience}}. The design style is {{visual_style}} and the goal is {{goal}}. Include: Flow Overview, Detailed Flow Steps (8–12 steps with actions and outcomes), Decision Points, Error & Edge Cases, Alternative Paths, Flow Metrics, and Handoff Notes. Keep under 1800 words. Use plain language. Skip any section if information is unknown. Paste any relevant background information after these instructions before running.